Bridges Unit 1 Review

16 = _ + 4

• 10
• 12
• 8
• 14

When a question tells you to "use the correct units," it means write your answer with a

(a)   ​

• label
• new number
• variable

"Double the number" means multiply by

We represent an unknown number in an equation with a

• constant
• coefficient
• expression
• variable

7 + 6 =

• 13
• 15
• 14
• 12

8 + 4 = 10 +​ (a)  

• 2
• 4
• 5
• 3

Write an equation to represent the beads on the left:

10 + ​ (a)   =​ (b)  

or

5 +​ (c)   + ​ 9 =​ (d)  

• 9
• 19
• 5
• 7
• 8
• 4

What is this strategy called:

• math mountain

• base ten drawing

• number line

• using your natural math tools

_ = 12 + 7

• 19
• 10
• 22
• 15

Place the numbers in the correct categories:

Groups:

(a) Even

,

(b) odd

• 3+2 = _

• 397

• _ = 49 - 6

• 12

• 2+2 = _

• 44 + 6 = _

• 36 + 3 = _

• 244

• _ = 45 - 12

• 13